Iron carbonyl compositions and their manufacture



- required for the Patented Sept. 30, 1930 UNITED STATES PATENT OFFICE v ALWIN mrr'rascn nnmn, GERMANY,

AND MARTIN M'l 'LLER-CUNRADI, OI" LUDWIGSHAFEN-ON-THE- ASSIGNORS TO I. G. FARBENINDUSTRIE AKTIENGESELLSCHAIT,

OF FBANKFORT-ON-THE-MAIN, GERMANY IRON CABBONYL COMPOSITIONS AND THEIR MANUFACTURE No Drawing. Application filed April 22, 1925, Serial No. 25,141, and in- Germany December 5, 1924.

- This invention has as its object compositions of iron carbonyl which compared with pure iron carbonyl have the advantage of being less inflammable and less liable to selfignition and in consequence thereof can be handled, shipped and stored with much greater convenience. The composition, in: accordance with our invention, consists of iron carbonyl and hydrocarbons or mixtures of hydrocarbons or-substitution products of hydrocarbons such for example as halogenated hydrocarbons or alcohols may be used and it is surprising that comparatively small additions of such solvents are sufiicient to raise the ignition point very considerably. cumstance is also of great importance ;for shipping as by reason therc'tiffthe freigh rates are not it is desired to make stable compositions for warehousing, the addition of the said sol'vents may be greater than the approximate amount desired degree of safety. In

thelatter case, the composition may consist of up to about 90 per cent, by volume, of the diluent and substantially more than 10 per cent, by. volume, of iron carbonyl, while for transport the amount of the iron carbonyl should be hi her for the reason stated above. The above described quantities of organic substances to be added to the iron carbonyl will be hereinafter referred to as stabilizing quantities. aforesaid advantages, such com ositions have also the property of 'ving 0 less obnoxious vapours. Genera y such solvents are most suitable from a practical point of iew as on the one hand are'cheap and on the other hand do not interfere with or even assist the intended use of theiron carbonyl, and

generally solvents of a lovg volatility are. to be preferred. As an example we cite a mixture of equal parts of iron carbonyl and benzene or heavy gasoline of 0.75 specific gravity.

,In the claims hereunto appended the expression hydrocarbon body is intended to cover hydrocarbons and halogenated substitution roducts of hydrocarbons, or alcohols.

We c aim: I

1. As a composition of matter a mixture of iron carbonyl with a hydrocarbon body This cir- 1 unnecessarily increased; Wli'l'f" bon containing substantially more than 10 percent, by volume, of iron carbonyl.

3. As a composition of matter a mixture of iron carbonyl with heavy gasoline containing substantially more than 10 per cent by volume of iron carbonyl.

4. As a composition of matter a'mixture of iron carbonyl with a hydrocarbon containing about 50 per cent by volume of iron carbonyl.

v f 5. As a composition of matter a mixture fof ironcarbonyl with heavy gasoline contain. -i ng about 50 per cent by volume of ironcar- "BOIIyIZ' i i l 6. A process of increasing the stability of iron carbonyl and rendering it less inflam- '1- mable which comprises adding thereto a stabilizing quantity of an organic solvent inert to said iron carbonyl. 4

7. A process for increasing the stability of iron carbonyl and renderin it less inflammable which comprises ad ing thereto an equal quantity of hcavygasoline.

In testimony whereof we havehereunto set ourhands.

ALWIN MI'rTAsoH. MARTIN MULLER-CUNRADI.

In addition to the 

